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GENESIS ENGINEERING& REDEVELOPMENT <br /> foot of the ground surface. Based on the existing surface material, a concrete, asphalt, or soil <br /> plug will be installed at the surface of each boring location. <br /> 3.2.2 Hand Auger <br /> A hand-held auger will be used to advance two of the soil borings. One boring will be <br /> situated north of the shop, near the area currently used to store hazardous material. This <br /> boring will be advanced at an angle to allow soil beneath the storage area to be characterized <br /> without breaching the shop floor. Soil samples from an estimated depth interval of 4-5 feet <br /> bgs will be collected for chemical analysis. <br /> Near the on-site septic system an exploratory boring will be advanced to an approximate <br /> depth of 3-4 feet below grade. A soil sample will be collected from this depth interval for <br /> chemical analysis. <br /> 3.3 Decontamination Activities <br /> All reusable equipment that may directly or indirectly contact samples will be <br /> decontaminated prior to use. This includes hand auger, drill rod, the portion of drill rig that <br /> stands above the borehole, bailers, and instruments such a borehole depth sounders. In <br /> addition, care will be taken to prevent samples and sampling equipment from coming into <br /> contact with potentially contaminating substances such as fugitive dust, tape, oil, engine <br /> exhaust, corroded surfaces, dirt, or any airborne source of contamination. Decontamination <br /> water will be containerized in U.S. Department of Transportation("DOT") lAl or 1A2-rated <br /> drums, or equivalent. <br /> 3.4 Groundwater Sampling <br /> One groundwater grab sample will be collected from each boring. For the purposes of <br /> quality control, one duplicate grab sample will also be collected. The samples will be <br /> collected in a disposable bailer and decanted into the laboratory supplied sample bottles. A <br /> label will be affixed to each sample container and the samples placed on ice. The VOC <br /> sample vials will contain a preservative supplied by the laboratory. The groundwater <br /> samples will be placed in a chilled cooler(4° Celsius+2 degrees),transported to a State- <br /> certified laboratory under chain of custody, and analyzed for petroleum hydrocarbons using <br /> USEPA Method 8015 Modified and volatile organic compounds using USEPA Method <br /> 8620B. <br /> 3.5 Soil Sampling <br /> 2303 West Lane 4 of I I <br /> Site Investigation Work Plan <br /> May 2009 <br />